Educators, students and others in more than 15 of Paterson's public schools were asked to shelter in place Wednesday morning after threats against two high schools were discovered, officials said.

After school officials were alerted to threats made against Eastside High School and John F. Kennedy High School, both campuses were put into a shelter in place, school officials said in a statement. As a precaution, other schools in the area were also put on a shelter in place, including Edward W. Kilpatrick School, Roberto Clemente School and nearby preschools.

Paterson Police Director Jerry Speziale said he learned of the threat at about 5 a.m. but it was not specific to a school or geographical area.

Officials did not further describe specifics of the threat.

Speziale said the threat was not credible after Wednesday's investigation.

Paul Brubaker, the school district's spokesman, said a "shelter in place" event means windows remain uncovered, classes continue at normal decibel levels, people are free to move about the school to go to bathrooms and other classes, etc.

"Your child’s safety is always our top priority," Eileen Shafer, district superintendent, said in a statement.

At around 10:30 a.m., parents and guardians were in front of Kennedy High School picking up students. A full security team was deployed at the school, one official said.

Eastside High School in Paterson.(Photo: Tariq Zehawi/NorthJersey.com)

All after-school activities were canceled, other than one athletic practice that was to be held indoors, the statement said. Transportation for athletes to and from practice was being provided by the district. Schedules for schools with extended days were not affected. Some "trunk-or-treats" went on as planned with police supervision, Speziale said.

The Paterson police, Passaic County Sheriff’s Office, Passaic County Prosecutor’s Office and state police investigated.

"I hope people enjoyed their Halloween and people didn’t allow this to ruin it," Speziale said.